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September weather forecast in Nagasaki

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

31 August, sun

	755 mmHg		82%
	7.9 m/s		+27

31 August, Sunday. day, 27°; night, 25°; overcast

1 September, mon

	756 mmHg		81%
	6.5 m/s		+27

1 September, Monday. day, 27°; night, 25°; overcast

2 September, tue

	756 mmHg		83%
	7 m/s		+27

2 September, Tuesday. day, 27°; night, 25°; rain

3 September, wed

	756 mmHg		81%
	6.6 m/s		+27

3 September, Wednesday. day, 27°; night, 25°; partly cloudy

4 September, thu

	756 mmHg		79%
	6.6 m/s		+27

4 September, Thursday. day, 27°; night, 25°; rain

5 September, fri

	755 mmHg		81%
	7.3 m/s		+27

5 September, Friday. day, 27°; night, 25°; rain

6 September, sat

	754 mmHg		81%
	8.8 m/s		+27

6 September, Saturday. day, 27°; night, 25°; rain

7 September, sun

	756 mmHg		80%
	8.1 m/s		+27

7 September, Sunday. day, 27°; night, 25°; clear

8 September, mon

	757 mmHg		80%
	5.8 m/s		+27

8 September, Monday. day, 26°; night, 24°; clear

9 September, tue

	758 mmHg		80%
	6 m/s		+27

9 September, Tuesday. day, 26°; night, 25°; clear

10 September, wed

	758 mmHg		80%
	6.1 m/s		+27

10 September, Wednesday. day, 26°; night, 24°; clear

11 September, thu

	758 mmHg		80%
	6.3 m/s		+27

11 September, Thursday. day, 26°; night, 25°; partly cloudy

12 September, fri

	758 mmHg		80%
	6.7 m/s		+27

12 September, Friday. day, 26°; night, 24°; rain

13 September, sat

	758 mmHg		80%
	6.6 m/s		+27

13 September, Saturday. day, 26°; night, 24°; rain

14 September, sun

	758 mmHg		79%
	6.5 m/s		+27

14 September, Sunday. day, 26°; night, 24°; overcast

15 September, mon

	756 mmHg		80%
	7.5 m/s		+27

15 September, Monday. day, 26°; night, 24°; rain

16 September, tue

	756 mmHg		79%
	9 m/s		+26

16 September, Tuesday. day, 26°; night, 24°; rain

17 September, wed

	757 mmHg		78%
	8.8 m/s		+26

17 September, Wednesday. day, 26°; night, 24°; rain

18 September, thu

	757 mmHg		76%
	7.6 m/s		+26

18 September, Thursday. day, 26°; night, 24°; clear

19 September, fri

	758 mmHg		76%
	7.3 m/s		+26

19 September, Friday. day, 25°; night, 23°; clear

20 September, sat

	758 mmHg		77%
	7.5 m/s		+26

20 September, Saturday. day, 25°; night, 23°; partly cloudy

21 September, sun

	758 mmHg		77%
	7.4 m/s		+26

21 September, Sunday. day, 25°; night, 23°; rain

22 September, mon

	758 mmHg		76%
	7.5 m/s		+26

22 September, Monday. day, 25°; night, 23°; partly cloudy

23 September, tue

	759 mmHg		74%
	7.5 m/s		+26

23 September, Tuesday. day, 25°; night, 23°; partly cloudy

24 September, wed

	759 mmHg		74%
	7.1 m/s		+26

24 September, Wednesday. day, 24°; night, 23°; clear

25 September, thu

	760 mmHg		75%
	6.5 m/s		+26

25 September, Thursday. day, 25°; night, 23°; clear

26 September, fri

	760 mmHg		74%
	6.8 m/s		+26

26 September, Friday. day, 25°; night, 22°; clear

27 September, sat

	760 mmHg		75%
	6.8 m/s		+26

27 September, Saturday. day, 24°; night, 22°; clear

28 September, sun

	760 mmHg		75%
	6.7 m/s		+25

28 September, Sunday. day, 25°; night, 23°; partly cloudy

29 September, mon

	759 mmHg		77%
	6.9 m/s		+26

29 September, Monday. day, 24°; night, 22°; rain

30 September, tue

	759 mmHg		77%
	8 m/s		+25

30 September, Tuesday. day, 24°; night, 22°; rain

1 October, wed

	759 mmHg		75%
	7.9 m/s		+25

1 October, Wednesday. day, 24°; night, 22°; clear

2 October, thu

	760 mmHg		75%
	7.7 m/s		+25

2 October, Thursday. day, 23°; night, 22°; rain

3 October, fri

	760 mmHg		73%
	7.3 m/s		+25

3 October, Friday. day, 24°; night, 22°; partly cloudy

4 October, sat

	761 mmHg		71%
	7.9 m/s		+25

4 October, Saturday. day, 24°; night, 21°; rain

Average data for 10 years

Nagasaki September

10

sunny days

12

days with precipitation

8

cloudy days

10 sunny days; 12 days with precipitation; 8 cloudy days;

78

%

air humidity

5

m/s

WindSE

200

mm of precipitation

(10% of annual average)

+26

°C

Water temperature

air humidity 78%; 200 millimeters of precipitation (10% of annual average); Wind south-easterly 5 Meters per second; Water temperature +26°

Weather graphs for September

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

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SE

SE

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SE

SE

SE

1

Average data for 10 years

2

3

4

5

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9

10

11

12

13

14

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21

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29

30

Daytime temperature

Night-time temperature

Cities near you

Busan
Jeju
Fukuoka
Hiroshima
Miyazaki
Geoje
Ulsan
Kagoshima
Kumamoto

Cities with similar weather in September

Yerevan
Ankara
Varna
Bishkek
Tiraspol
Podgorica
Comrat
Atyrau
Bender

The weather forecast for September 2025 is based on historical data from the past 10 years.

In September, the weather in Nagasaki is typically warm. Average daily high temperature in September is about 26 degrees above zero. On average, Nagasaki has 12 rainy, 10 sunny, 6 partly cloudy, and 2 cloudy days in September. The rains are usually heavy.

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